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| Monitoring Location |
Number of Base Flow Sampling Events to Date |
Total Number of Sampling Events to Date |
Average Under Base Flow Conditions2 (colonies/100mL) |
Average of all Sampling Events (colonies/100ml) |
Geometric Mean of all Sampling Events3 (colonies/100mL) |
Lafayette Road |
1 |
4 |
200 |
875 |
319 |
Davis Road Bridge |
1 |
4 |
200 |
11100 |
813 |
McLean Bridge |
1 |
4 |
120 |
1243 |
337 |
Freeville |
5 |
12 |
447 |
992 |
377 |
Freese Road |
5 |
12 |
117 |
835 |
217 |
Cayuga Street Bridge |
6 |
13 |
205 |
966 |
347 |
1The recommended EPA limit for a heavily used bathing beach is a geometric mean of 126 colonies/100ml for a series of samples. The recommended maximum for a single sample is 235 colonies/100ml. |
2Average is equal to the sum of n numbers divided by n. Example: Average of 50, 20 and 1000 is 357. |
3Geometric mean is equal to the nth root of the product of n numbers times each other. Example: Geometric mean of 50,20 and 1000 is 100. |
| Monitoring Location |
Number of Base Flow Sampling Events to Date |
Total Number of Sampling Events to Date |
Average Under Base Flow Conditions2 (colonies/100mL) |
Average of all Sampling Events (colonies/100ml) |
Median of all Sampling Events3 (colonies/100mL) |
Lafayette Road |
1 |
4 |
1880 |
26520 |
8100 |
Davis Road Bridge |
1 |
4 |
1420 |
40590 |
5470 |
McLean Bridge |
1 |
4 |
1840 |
21355 |
4790 |
Freeville |
7 |
18 |
6909 |
19168 |
6500 |
Freese Road |
7 |
18 |
3938 |
14893 |
4400 |
Cayuga Street Bridge |
8 |
19 |
4415 |
24081 |
3600 |
1The standard set by the New York State Department of Environmental Conservation (NYSDEC) for surface freshwater is a monthly median value of 2400 colonies/100ml based on at least 5 samples. The recommended maximum for a single sample is 5000 colonies/100ml. |
2Average is equal to the sum of n numbers divided by n. Example: Average of 50, 20 and 1000 is 357. |
3The median is the value in the middle of a series, i.e., half the numbers in the series are higher and half are lower than the median. |
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